美洛昔康贴片抗炎作用实验研究

目的观察局部用美洛昔康贴剂(Mel T)的抗炎作用及其对胃肠道的刺激性。方法采用二甲苯致腹腔毛细血管通透性增加法和二甲苯致耳肿胀法,角叉菜胶诱发足肿胀法以及完全佐剂诱导佐剂性关节炎等实验方法。结果Mel T局部粘贴小鼠20、105、mg/kg,明显抑制二甲苯所致的小鼠耳肿胀和二甲苯引起的皮肤毛细血管通透性的增加,大鼠足部粘贴14、7、3.5 mg/kg,明显抑制角叉菜胶致大鼠足肿胀;对AA大鼠原发性和继发性炎症均有抑制作用,且大鼠胃肠道粘膜出血和溃疡比Mel灌胃组少。结论Mel T有明显的抗炎作用,不良反应小于口服给药。     

痹痛宁颗粒抗炎镇痛的实验研究

目的研究痹痛宁颗粒的抗炎镇痛作用。方法小鼠耳廓肿胀、大鼠足跖肿胀等实验观察其抗炎作用;通过热板法和醋酸扭体法观察其镇痛作用。结果痹痛宁颗粒能显者抑制二甲苯所致小鼠耳廓肿胀,蛋清致大鼠足跖肿胀,提高热板法疼痛模型小鼠痛阈值,抑制醋酸所致小鼠扭体痛反应。结论痹痛宁颗粒具有显著的抗炎、镇痛作用,应进—步深入探讨其抗炎、镇痛的作用机制。     

小金胶囊抗炎、镇痛作用药效学试验

目的：考察小金胶囊在抗炎及镇痛方面的药效作用。方法：抗炎作用采用小鼠耳肿胀法、大鼠踝关节肿胀法，镇痛作用采用小鼠甲醛致痛法及醋酸扭体法。结果：小金胶囊对二甲苯所致的小鼠耳炎具有明显的抑制作用，可抑制角叉菜胶所致的大鼠踝关节肿胀，对甲醛所致的小鼠足疼痛具有抑制作用，并可减少醋酸引起的小鼠扭体次数。结论：小金胶囊具有明显的抗炎及镇痛作用。     

骨湿宁治疗风湿性关节炎的实验研究

目的:观察骨湿宁的主要药理作用。方法:采用佐剂、角叉菜胶、尿酸钠等引发大鼠关节炎症或疼痛模型、小鼠热板、醋酸扭体法以及腹腔毛细血管通透性来评价骨湿宁的抗炎、镇痛作用。结果:骨湿宁能抑制大鼠佐剂性关节炎的原发性和继发性病变;抑制角叉菜胶所致的大鼠炎症肿胀;对由大鼠尿酸钠关节炎致痛、小鼠热板、醋酸扭体致痛均有明显的镇痛作用;并具有降低小鼠腹腔毛细血管通透性、抑制大鼠棉球致组织增生的作用。结论:骨湿宁具有一定的抗炎、镇痛作用     

小金胶囊抗炎、镇痛作用药效学试验

目的:考察小金胶囊在抗炎及镇痛方面的药效作用。方法:抗炎作用采用小鼠耳肿胀法、大鼠踝关节肿胀法,镇痛作用采用小鼠甲醛致痛法及醋酸扭体法。结果:小金胶囊对二甲苯所致的小鼠耳炎具有明显的抑制作用,可抑制角叉菜胶所致的大鼠踝关节肿胀,对甲醛所致的小鼠足疼痛具有抑制作用,并可减少醋酸引起的小鼠扭体次数。结论:小金胶囊具有明显的抗炎及镇痛作用。     

复方威灵仙合剂抗炎、镇痛作用观察

目的：观察复方威灵仙合剂抗炎、镇痛作用。方法：分别采用小鼠醋酸扭体法、热板法观察药物的镇痛作用,蛋清致大鼠足跖肿胀法、二甲苯致小鼠耳廓肿胀法观察抗炎作用。结果：复方威灵仙合剂能明显减少小鼠醋酸所引起的扭体反应数,延长小鼠热板法引起的痛反应潜伏期．对大鼠蛋清所致足跖肿胀及二甲苯引起的小鼠耳廓肿账均有明显的抑制作用。结论：复方威灵仙合剂具有抗炎,镇痛作用．     

前列宁栓抗炎镇痛作用实验

目的:研究前列宁栓的抗炎、镇痛作用。方法:采用二甲苯所致小鼠耳廓肿胀实验、角叉菜胶致大鼠足跖肿实验、大鼠棉球肉芽肿的影响实验、小鼠腹腔毛细血管通透性实验,细菌性(大肠杆菌)前列腺炎的抗炎作用。采用醋酸致小鼠扭体反应实验和小鼠热板法实验观察了前列宁栓的镇痛作用。结果:前列宁栓可明显抑制二甲苯所致的小鼠耳廓炎症;在多数时间降低角叉菜胶致大鼠足跖肿胀;明显抑制大鼠棉球肉芽肿的生成;明显降低小鼠腹腔毛细血管通透性;明显抑制大鼠细菌性前列腺炎;明显降低醋酸致小鼠扭体反应数;明显升高小鼠痛阈值。结论:前列宁栓具有明显的抗炎、镇痛作用。     

CDG的镇痛、抗炎作用研究

目的观察CDG抗炎、镇痛和抗佐剂性关节炎的作用。方法采用醋酸扭体法、小鼠腹腔毛细血管通透性试验、二甲苯致小鼠耳肿胀试验和弗氏完全佐剂致大鼠佐剂性关节炎试验。结果CDG 0.04、0.08g.kg-1可明显减少冰醋酸所致小鼠的扭体反应次数和减轻佐剂致原发性大鼠右后足跖肿胀(P<0.05、0.01);CDG 0.08g.kg-1能显著抑制冰醛酸致小鼠毛细血管通透性增加(P<0.05)和明显减轻小鼠耳廓肿胀度(P<0.01)。结论CDG具有较好的镇痛、抗急性炎症和抗佐剂性关节炎的作用。     

国产湿痛喜康的抗炎解热和镇痛作用

湿痛喜康对角叉菜胶诱发大鼠踝关节肿胀、二甲苯诱导小鼠耳水肿、大鼠佐剂性关节炎、酵母诱发大鼠发热、冰醋酸诱导小鼠扭体反应和“热板”致痛反应等实验模型,有明显的抗炎、解热和镇痛作用。对角叉菜胶性炎症模型和小鼠扭体反应的ED_(50)分别为5.26mg/kg和5.5mg/kg。     

骨湿宁治疗风湿性关节炎的实验研究

目的：观察骨湿宁的主要药理作用。方法：采用佐剂，角叉菜胶，尿酸钠等引发大鼠关节炎症或疼痛模型，小鼠热板，醋酸扭体法以及腹腔毛细血管通透性来评价骨湿宁的抗炎，镇痛作用。结果：骨湿宁能抑制大鼠佐剂性关系炎的原发性和继发性病变；抑制角叉菜胶所致的大鼠炎症肿胀；对由大鼠尿酸钠关节炎致痛，小鼠热板，醋酸扭体致痛均有明显的镇痛作用；并具有降低小鼠腹腔毛细血管通透性，抑制大鼠棉球致组织增生的作用。结论：骨湿宁具有一定的抗炎，镇痛作用。     

谓葆对胃炎及胃溃疡作用的研究

目的观察谓葆抗实验性胃炎、胃溃疡及止痛镇痛的作用。方法采用大鼠无水乙醇胃炎模型、消炎痛胃溃疡模型、幽门结扎溃疡模型以及慢性醋酸型溃疡模型,观察谓葆的抗胃炎及抗胃溃疡作用,并采用小鼠醋酸扭体试验方法对其止痛镇痛作用进行观察。结果谓葆低中高剂量(75mg/kg、150mg/kg和300mg/kg)均减少大鼠无水乙醇模型的胃黏膜损伤面积(与对照组相比P<0.05);降低大鼠消炎痛胃溃疡模型的损伤指数(P<0.05)及大鼠幽门结扎溃疡模型的溃疡指数(P<0.05);对大鼠慢性醋酸型溃疡模型也有良好的保护作用,给药组溃疡体积较对照组减少(P<0.05)。谓葆两个剂量(75mg/kg和150mg/kg)均降低醋酸扭体试验小鼠的扭体次数(P<0.05)。结论谓葆具有抗多种胃炎和胃溃疡作用,并有止痛镇痛作用。     

马来酸三甲氧苯丁氨酯的镇痛作用

研究马来酸三甲氧苯丁氨酯（ＴＭ）的镇痛作用，结果显示，腹腔注射ＴＭ２４５、３５０、５００ｍｇ／ｋｇ能显著抑制小鼠扭体反应，５０、７０ｍｇ／ｋｇ能显著提高小鼠热板反应痛阈值，３５、５０、７０ｍｇ／ｋｇ则能够显著提高小鼠压尾痛阈值并减少甲醛致痛评分值，３７５、７００ｍｇ／ｋｇ可显著提高大鼠电刺激痛阈值．连续给小鼠腹腔注射ＴＭ７０ｍｇ／ｋｇ７天，每天用热板法测定小鼠痛阈值，表明其镇痛作用无耐受性．     

Analgesic activity of pymadine

The analgesic effect of 4-aminopyridine (pymadine) was studied in experiments on rats and mice at thermal and chemical pain stimulation. Pymadine (1, 3 and 5 mg/kg) exerted the analgesic effect when administered alone and concomitantly with analgin and morphine at chemical pain stimulation. During thermal pain stimulation pymadine had the analgesic effect only at dosage of 5 mg/kg and potentiated the action of morphine given in doses of 3 and 5 mg/kg. The same doses of pymadine failed to influence changes in pain reaction induced by analgin at thermic pain stimulation.     

高乌甲素对炎症性疼痛的镇痛作用

目的　研究高乌甲素对急、慢性炎症的镇痛作用。方法　采用大鼠甲醛溶液致炎 ,鹿角菜胶致炎及佐剂性关节炎三种炎症性疼痛模型进行实验。结果　高乌甲素 8、1 6mg/kg灌胃对急性 (甲醛溶液 ,鹿角菜胶致炎 )及慢性 (佐剂性关节炎 )的炎症性疼痛有明显镇痛作用 ,峰值在给药后 0 5～ 1h ,持续 2h以上。结论　高乌甲素对急、慢性炎症性疼痛具有显著镇痛作用     

Pharmacological validation of an automated method of pain scoring in the formalin test in rats

In 1997, we described a new automated method of scoring the pain behaviors in the formalin test. The algic behavior was automatically measured with the help of a video-analysis system. The time during which the animal grooms, licks, or bites itself was used as the parameter of pain. In the present study, we tested various analgesics to realize a pharmacological validation of the system. The effect of opiate analgesic (morphine, i.v.), nonsteroidal anti-inflammatory drugs (paracetamol, i.v., piroxicam, i.v., indomethacin, i.v.), antidepressant drugs (clomipramine, desipramine, nortryptyline, and paroxetine, i.p.), and serotonin (i.t.) were analyzed. A dose of 1.25 mg/kg of morphine induced a decrease in the scores of phases 1 and 2. Naloxone (0.25 mg/kg) reversed the effect of morphine (2.5 mg/kg). A 20-mg/kg dose of indomethacin induced a decrease in the second phase, and paracetamol induced a decrease in both phases (analgesic doses were 400 mg/kg and 200 mg/kg for first and second phases, respectively). Piroxicam had no effect on the pain scores. Clomipramine, desipramine, and paroxetine at a dose of 5 mg/kg induced a significant decrease in the second phase. Nortriptyline had no effect on the pain scores. A dose of 75 microg of serotonin induced a decrease in both phases 1 and 2. This study demonstrated that this system shows a good pharmacological sensitivity, although it is lower than that of manual assessment.     

乳铁蛋白在大鼠坐骨神经慢性束缚损伤模型产生镇痛作用

目的:研究乳铁蛋白在大鼠坐骨神经慢性束缚损伤模型的镇痛作用。方法:30只成年SD大鼠被制作为坐骨神经慢性束缚损伤模型,用辐射热刺激法诱发鼠后腿回缩试验测定痛阈,实验动物分为5组,分别腹腔注射生理盐水及乳铁蛋白30mg/kg、100mg/kg、300mg/kg、1000mg/kg。药物效应以最大可能效应百分数(MPE%)表示。以t检验法分析乳铁蛋白各剂量组与对照组之间的差异。结果:腹腔注射乳铁蛋白剂量依赖性地延长大鼠后腿回缩潜伏期;乳铁蛋白的峰值作用时间在用药后60分钟;乳铁蛋白各剂量组的最大可能效应百分数与生理盐水组相比差异有显著性。结论:腹腔注射乳铁蛋白在大鼠坐骨神经慢性束缚损伤模型产生剂量依赖性镇痛作用。     

皖南地区眼镜蛇毒镇痛组分对大鼠炎性痛作用机制探讨

目的：探讨皖南地区眼镜蛇毒镇痛组分（CVAF）对大鼠炎性痛作用效应及其可能机制。方法：40只雄性SD大鼠在测定基础痛阈后随机分为4组（n=10）：正常对照组（NC组）、炎性痛模型组（CFA组）、炎性痛模型＋CVAF组（CFA＋CVAF组）和炎性痛模型＋吗啡组（CFA＋Morphine组）。随后将36只SD雄性大鼠随机分成6组（n=6）：正常对照组（NC组）、炎性痛模型组（CFA组）、炎性痛模型＋CVAF组（CFA＋CVAF组）、炎性痛模型＋阿托品＋CVAF组（CFA＋Atr＋CVAF）、炎性痛模型＋纳洛酮＋CVAF组（CFA＋Nal＋CVAF）和炎性痛模型＋L—NAME＋CVAF组（CFA＋L—NAME＋CVAF）。测定各组大鼠的热痛阈潜伏期（TWL）和机械痛阈值（MWT）,制备脊髓匀浆,用于检测其中IL-1和TNF—a的表达。结果：与NC组相比,CFA组大鼠第1天开始TWL和MWT明显降低,出现热痛觉过敏和机械痛觉过敏,持续14d仍存在;CFA组大鼠脊髓匀浆IL-1和TNF—a表达均明显增高（P〈0．01）。与CFA组相比,CFA组大鼠腹腔注射CVAF后其TWL和MWT均升高,表明炎性痛大鼠热痛觉过敏和机械痛觉过敏得到改善;脊髓匀浆中IL-1、TNF—a表达显著减少（P〈0．01）,显示CVAF通过抑制炎性因子的产生而发挥镇痛作用。与CFA＋CVAF组大鼠相比,L—NAME＋CVAF组大鼠明显增强了CVAF对炎性痛大鼠的镇痛作用,表现为TWL和MWT的明显升高（P〈0．01）;而CFA＋Atr＋CVAF组和CFA＋Nal＋CVAF组大鼠TWL和MWT均有不同程度的降低（P〈0．01）。结论：初步阐明CVAF通过减少炎性因子的释放对炎性痛大鼠具有镇痛效应。阿片肽受体系统和胆碱能受体系统均部分参与了其对炎性痛大鼠的镇痛作用。     

Corticosteroid effects on morphine-induced antinociception as a function of two types of corticosteroid receptors in brain

The antinociceptive effect of parenterally and intracerebroventricularly injected morphine and beta-endorphin in adrenalectomized rats and in adrenalectomized rats treated with adrenal steroids was examined employing the hot-plate method. (1) Adrenalectomy sensitized the rats to an analgesic effect of morphine and beta-endorphin. (2) Replacement therapy (chronic and acute) with corticosterone, dexamethasone or RU 28362 (glucocorticoid receptor agonist) effectively reversed the increase in the sensitivity to the analgesic effect of peripherally injected morphine (5 mg/kg i.p.) induced by adrenalectomy to the level of sham-operated animals. Glucocorticosteroids administered to non-adrenalectomized rats did not change the sensitivity to morphine. (3) Corticosterone had a biphasic, dose-dependent effect; the most significant attenuation of the hypersensitivity to morphine-induced antinociception in adrenalectomized rats was achieved after 0.01 mg and after 10 mg (per kg b.w.). Doses of corticosterone of 0.005 mg/kg and in a range of 0.05-0.30 mg/kg were ineffective. (4) Corticosterone in a dose of 0.01 mg/kg (s.c.) had suppressant effects on the adrenalectomy-induced increase in the sensitivity to antinociception induced by morphine when given prior to morphine (60, 30 and 5 min) as well as after the injection of morphine (before the first and the second testing on the hot-plate, 15 and 5 min, respectively). (5) Intracerebroventricularly (i.c.v.) injected morphine and beta-endorphin also displayed the hypersensitivity to the analgesic effect in adrenalectomized rats which in both cases could be suppressed by 0.01 mg/kg of corticosterone given subcutaneously 5 min prior to administration of the opiate.(ABSTRACT TRUNCATED AT 250 WORDS)     

Carbamazepine potentiates morphine analgesia on postoperative pain in morphine-dependent rats

Postoperative pain and its control remain one of the most important issues in the field of surgery and health care systems. Morphine is a potent and effective analgesic, but substance abuse patients can manifest cross-tolerance to it, making it difficult to satisfy their analgesic/anesthetic requirements. As carbamazepine has shown antinociceptive properties in a variety of experimental and clinical settings, in the present study, we evaluated its potential antiallodynic effects on postoperative pain in na?ve and morphine-dependent rats. Male rats were assigned to morphine-dependent and na?ve groups and received intraperitoneally drug vehicles as control group, 3mg/kg morphine, 5, 10 or 15 mg/kg carbamazepine or 5mg/kg carbamazepine plus 3mg/kg morphine as a combination therapy 2 and 24h after surgery. Morphine-dependency was induced with multiple doses of morphine administered i.p. and plantar incision was made on the hind paw to simulate the postoperative pain. Paw withdrawal threshold (PWT) was obtained by von Frey filaments every 30 min after drug injection for up to 180 min. Morphine at 3mg/kg exerted antiallodynic effects in na?ve rats and a decreased antinociception was observed in morphine-dependent rats. In contrast, 5mg/kg carbamazepine did not significantly alter PWT in naives but it was effective in dependent rats. 10 and 15 mg/kg carbamazepine attenuated allodynia following surgery in both groups. Co-administration of 5mg/kg carbamazepine with 3mg/kg morphine produced higher analgesia in morphine-dependent incised rats and prolonged antinociception as compared to morphine alone (P<0.05). Thus carbamazepine may potentiate the analgesic effect of chronically administered morphine on postoperative pain model in morphine-dependent rats.